Date: Tue, 19 Oct 2021 07:39:47 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 258994] iic(4): Panics on Nanopi Neo when using 16-bit device addressing width: panic: Assertion strlen(description) < MAX_W_NAME failed at ... sys/kern/subr_witness.c:1914 Message-ID: <bug-258994-227-9YE6imrG9A@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-258994-227@https.bugs.freebsd.org/bugzilla/> References: <bug-258994-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258994 alydiomc@yahoo.com changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #228624|0 |1 is obsolete| | CC| |alydiomc@yahoo.com --- Comment #8 from alydiomc@yahoo.com --- Created attachment 228827 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D228827&action= =3Dedit Added some improvements. root@nanopi-neo:~/i2c # i2c -s /dev/iic0 Scanning I2C devices on /dev/iic0: 40 57 68=20 [8bit single write]=20 root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d w -o 0 -w 8 -c 1 -m tr < 00.hex root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d r -o 0 -w 8 -c 1 -m tr 00 [8bit single write]=20 root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d w -o 0 -w 8 -c 1 -m tr < 20.hex root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d r -o 0 -w 8 -c 1 -m tr 20=20 [8bit multiple write] Clear Registers from offset 5 to 1f [27 bytes] root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d w -o 5 -w 8 -c 27 -m tr < null.txt [8bit multiple Read] Read Registers from offset 0 [48 bytes] root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d r -o 0 -w 8 -c 48 -m tr 20 13 44 4c 46 00 00 00 00 00 00 00 00 00 00 00=20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00=20 ff 10 00 00 00 10 00 00 00 10 00 00 00 10 00 00=20 [8bit multiple write] Fill Register from offset 5 to 1f [27 bytes] root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d w -o 5 -w 8 -c 27 -m tr < random.txt root@nanopi-neo:~/i2c # i2c -a 40 -f /dev/iic0 -d r -o 0 -w 8 -c 48 -m tr 20 13 44 4c 46 7e 77 14 67 01 58 1c 2b 06 0e 17=20 69 10 1e 1f 2e 00 c6 16 0c 04 a2 04 3c 06 1e 11=20 ff 10 00 00 00 10 00 00 00 10 00 00 00 10 00 00=20 [16bit write] Clear eeprom data from offset 0 to 1F [32 bytes] root@nanopi-neo:~/i2c # i2c -a 57 -f /dev/iic0 -d w -o 0 -w 16 -c 32 -m tr < null.txt [16bit Read] Read eeprom data from offset 0 [48 bytes] root@nanopi-neo:~/i2c # i2c -a 57 -f /dev/iic0 -d r -o 0 -w 16 -c 48 -m tr 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00=20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00=20 f8 0c 00 00 02 04 00 05 34 00 20 00 08 00 28 00=20 [16bit write] Fill eeprom from offset 0, 32bytes root@nanopi-neo:~/i2c # i2c -a 57 -f /dev/iic0 -d w -o 0 -w 16 -c 32 -m tr < random.txt root@nanopi-neo:~/i2c # i2c -a 57 -f /dev/iic0 -d r -o 0 -w 16 -c 48 -m tr 7e 77 b4 67 e1 58 1c 2b a6 0e d7 69 50 1e 9f 2e=20 a0 c6 76 0c 84 a2 a4 3c 66 1e 51 b4 10 f1 d8 60=20 f8 0c 00 00 02 04 00 05 34 00 20 00 08 00 28 00 --=20 You are receiving this mail because: You are the assignee for the bug.=
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